Home / 398,764.50-550,295.04-219,916.50

Finding the Fourth Proportional to 398,764.50, 550,295.04 and 219,916.50

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Solution

The fourth proportional to 398,764.50, 550,295.04 and 219,916.50 is: 303,484.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,764.50 : 550,295.04 = 219,916.50 : x
  2. Step 2: Convert to fraction form
    398,764.50/550,295.04 = 219,916.50/x
  3. Step 3: Cross multiply
    398,764.50x = 550,295.04 × 219,916.50
  4. Step 4: Simplify right side
    398,764.50x = 121,018,959,164.16
  5. Step 5: Solve for x
    x = 121,018,959,164.16/398,764.50
  6. Step 6: Final answer
    x = 303,484.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.